What materials combined to form the topsoil?

weathered bedrock and wind-blown sand

decomposed humus and wind-blown sand

decomposed plant litter and weathered parent material

deposited sediment and decomposed plant litter

Which of the following mixtures can be a buffer? Group of answer choices ammonia and ammonium acetate potassium nitrate and nitric acid potassium nitrite and nitrous acid sodium chloride and hypochlorous acid

I'm iron and oxygen combine to form iron oxide (rust). list the reactants and products of this reaction.

Determine the percent composition by mass of the element carbon in the acetamide compound

Examine the reaction equation. Mg (OH) 2 (s) + HCl (aq) →H2O (l) + MgCl2 (aq) What coefficients will balance the equation? A) 2, 4, 2, 2 B) 1, 2, 3, 1 C) 1, 1, 1, 1 D) 1, 2, 2, 1

How can I differentiate between Ionic compounds, molecular compounds, and acids given only the formula?

Why are the atomic masses for most elements not whole numbers?

An aqueous solution is 0.387 m in hcl. what is the molality of the solution if the density is 1.23 g/ml?

Carbon monoxide reacts with oxygen to form carbon dioxide. 2 CO (g) + O2 (g) → 2C02 (8) In a 1.00 L flask, 3.40 atm of CO reacts with 2.60 atm of O2. Assuming that the temperature remains constant, what is the final pressure in the flask? 4.30 atm 2.

The nerves that Branch out from the spinal cord and connect to the body

The term southern oscillation most nearly refers to